import type { Extensions } from "@tiptap/core"
import StarterKit from "@tiptap/starter-kit"
import Underline from "@tiptap/extension-underline"
import Link from "@tiptap/extension-link"
import TextAlign from "@tiptap/extension-text-align"
import { TextStyle, Color, BackgroundColor, FontSize, FontFamily } from "@tiptap/extension-text-style"
import Highlight from "@tiptap/extension-highlight"
import Image from "@tiptap/extension-image"
import Placeholder from "@tiptap/extension-placeholder"
import {
  DocsTable,
  DocsTableCell,
  DocsTableHeader,
  DocsTableRow,
  DOCS_TABLE_EXTENSION_OPTIONS,
} from "@/lib/drive/extensions/docs-table"
import Collaboration from "@tiptap/extension-collaboration"
import CollaborationCaret from "@tiptap/extension-collaboration-caret"
import type { HocuspocusProvider } from "@hocuspocus/provider"
import type * as Y from "yjs"
import { DocsEditorShortcuts } from "@/lib/drive/docs-editor-shortcuts"
import { DocsGraphic, DocsInlineGraphic } from "@/lib/drive/extensions/docs-graphic"
import { DocsGraphicPasteDrop } from "@/lib/drive/extensions/docs-graphic-paste-drop"
import { DocsGraphicAnchorSync } from "@/lib/drive/extensions/docs-graphic-anchor-sync"
import { DocsGraphicKeyboard } from "@/lib/drive/extensions/docs-graphic-keyboard"
import { DocsPageFlowDecoration } from "@/lib/drive/extensions/docs-page-flow-decoration"
import { DocsParagraphStyle } from "@/lib/drive/extensions/docs-paragraph-style"
import { DocsParagraphIndent } from "@/lib/drive/extensions/docs-paragraph-indent"
import { DocsParagraphSpacing } from "@/lib/drive/extensions/docs-paragraph-spacing"
import { DocsListStyles } from "@/lib/drive/extensions/docs-list-styles"
import { TaskItem, TaskList } from "@tiptap/extension-list"

export function buildRichTextExtensions(options?: {
  collaboration?: { document: Y.Doc }
  collaborationCaret?: { provider: HocuspocusProvider; user: { name: string; color: string } }
  placeholder?: string
  editable?: boolean
}): Extensions {
  const extensions: Extensions = [
    StarterKit.configure({
      undoRedo: options?.collaboration ? false : undefined,
      heading: { levels: [1, 2, 3, 4, 5, 6] },
    }),
  ]

  // Collaboration must register right after StarterKit (y-prosemirror binding).
  if (options?.collaboration) {
    extensions.push(
      Collaboration.configure({
        document: options.collaboration.document,
        field: "default",
      })
    )
  }
  if (options?.collaborationCaret) {
    extensions.push(
      CollaborationCaret.configure({
        provider: options.collaborationCaret.provider,
        user: options.collaborationCaret.user,
      })
    )
  }

  extensions.push(
    Underline,
    Link.configure({ openOnClick: false }),
    TextStyle,
    FontFamily,
    FontSize,
    Color,
    BackgroundColor,
    Highlight.configure({ multicolor: true }),
    TextAlign.configure({ types: ["heading", "paragraph"], alignments: ["left", "center", "right", "justify"] }),
    DocsTable.configure(DOCS_TABLE_EXTENSION_OPTIONS),
    DocsTableRow,
    DocsTableCell,
    DocsTableHeader,
    DocsGraphic,
    DocsInlineGraphic,
    DocsGraphicPasteDrop,
    DocsGraphicAnchorSync,
    DocsGraphicKeyboard,
    DocsPageFlowDecoration,
    DocsParagraphStyle,
    DocsParagraphIndent,
    DocsParagraphSpacing,
    DocsListStyles,
    TaskList,
    TaskItem.configure({ nested: true }),
    Image.configure({ inline: true, allowBase64: true }),
    Placeholder.configure({
      placeholder: options?.placeholder ?? "Commencez à écrire…",
    }),
    DocsEditorShortcuts
  )

  return extensions
}

export const RICHTEXT_EDITOR_CLASS =
  "ultidrive-richtext-editor max-w-none outline-none focus:outline-none prose prose-sm"

export const RICHTEXT_REGION_EDITOR_CLASS =
  "ultidrive-richtext-region-editor max-w-none outline-none focus:outline-none prose prose-sm"

/** Full-feature extensions for inline header/footer editors (no collab, no page flow). */
export function buildRegionEditorExtensions(placeholder?: string): Extensions {
  return [
    StarterKit.configure({ heading: { levels: [1, 2, 3, 4] } }),
    Underline,
    Link.configure({ openOnClick: false }),
    TextStyle,
    FontFamily,
    FontSize,
    Color,
    BackgroundColor,
    Highlight.configure({ multicolor: true }),
    TextAlign.configure({
      types: ["heading", "paragraph"],
      alignments: ["left", "center", "right", "justify"],
    }),
    DocsTable.configure(DOCS_TABLE_EXTENSION_OPTIONS),
    DocsTableRow,
    DocsTableCell,
    DocsTableHeader,
    DocsGraphic,
    DocsInlineGraphic,
    DocsGraphicPasteDrop,
    DocsGraphicKeyboard,
    Image.configure({ inline: true, allowBase64: true }),
    Placeholder.configure({
      placeholder: placeholder ?? "Saisissez un en-tête ou un pied de page",
    }),
  ]
}